EP2731907A1 - Élément de siège en mousse et procédé et moule pour sa production - Google Patents

Élément de siège en mousse et procédé et moule pour sa production

Info

Publication number
EP2731907A1
EP2731907A1 EP12811813.0A EP12811813A EP2731907A1 EP 2731907 A1 EP2731907 A1 EP 2731907A1 EP 12811813 A EP12811813 A EP 12811813A EP 2731907 A1 EP2731907 A1 EP 2731907A1
Authority
EP
European Patent Office
Prior art keywords
mold
series
portions
padded element
element defined
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12811813.0A
Other languages
German (de)
English (en)
Other versions
EP2731907A4 (fr
EP2731907B1 (fr
Inventor
Pasquale Rossi
Edgardo A. San Miguel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Proprietect LP
Original Assignee
Proprietect LP
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Proprietect LP filed Critical Proprietect LP
Priority to SI201231533T priority Critical patent/SI2731907T1/sl
Priority to EP18204508.8A priority patent/EP3473591A1/fr
Priority to PL12811813T priority patent/PL2731907T3/pl
Publication of EP2731907A1 publication Critical patent/EP2731907A1/fr
Publication of EP2731907A4 publication Critical patent/EP2731907A4/fr
Application granted granted Critical
Publication of EP2731907B1 publication Critical patent/EP2731907B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70—Upholstery springs ; Upholstery
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C27/00—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas
    • A47C27/14—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays
    • A47C27/142—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities
    • A47C27/144—Spring, stuffed or fluid mattresses or cushions specially adapted for chairs, beds or sofas with foamed material inlays with projections, depressions or cavities inside the mattress or cushion
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47C—CHAIRS; SOFAS; BEDS
    • A47C7/00—Parts, details, or accessories of chairs or stools
    • A47C7/02—Seat parts
    • A47C7/18—Seat parts having foamed material included in cushioning part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
    • B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
    • B29C44/1266—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being completely encapsulated, e.g. for packaging purposes or as reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D99/00—Subject matter not provided for in other groups of this subclass
    • B29D99/0092—Producing upholstery articles, e.g. cushions, seats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60N—SEATS SPECIALLY ADAPTED FOR VEHICLES; VEHICLE PASSENGER ACCOMMODATION NOT OTHERWISE PROVIDED FOR
    • B60N2/00—Seats specially adapted for vehicles; Arrangement or mounting of seats in vehicles
    • B60N2/70—Upholstery springs ; Upholstery
    • B60N2/7017—Upholstery springs ; Upholstery characterised by the manufacturing process; manufacturing upholstery or upholstery springs not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G11/00—Finished upholstery not provided for in other classes
    • B68G11/04—Finished upholstery not provided for in other classes mainly composed of resilient materials, e.g. of foam rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B68—SADDLERY; UPHOLSTERY
    • B68G—METHODS, EQUIPMENT, OR MACHINES FOR USE IN UPHOLSTERING; UPHOLSTERY NOT OTHERWISE PROVIDED FOR
    • B68G13/00—Upholstered panels
    • B68G13/04—Upholstered panels with indented pattern formed by bonding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/58—Upholstery or cushions, e.g. vehicle upholstery or interior padding

Definitions

  • the present invention relates to a foam seat element, preferably a foam vehicular seat element.
  • the present invention relates to a process for producing a foam seat element, preferably a vehicular seat element.
  • the present invention relates to a mold for producing a molded element, preferably a molded foam seat element, more preferably a molded foam vehicular seat element.
  • Passenger seats in vehicles are typically fabricated from a foam (usually a polyurethane foam) material which is molded into the desired shape and covered with an appropriate trim cover.
  • the foamed material is selected to provide passenger comfort by providing a resilient seat and the trim cover is selected to provide the desired aesthetic properties.
  • Dual density or dual firmness seat elements are expensive to produce and, in many cases, alter the feel of the supporting surface of the seat only in areas where it is perceived to be important to have different firmness properties. In other words, the conventional dual density or dual firmness seat elements use a generally coarse approach to provision of variable density or firmness.
  • dual (or multi) density or dual (or multi) firmness seats typically require the use of two or more types of foam (e.g., molded, free rise, bead and the like) which are typically produced separately and secured together increasing the production time and costs of the final seat product.
  • foam e.g., molded, free rise, bead and the like
  • certain dual (or multi) firmness seats are made by molding or otherwise securing an insert (e.g., wire components, flexolators and the like) to a foam substrate.
  • a foam element which, on the one hand, maintains the technical advantage of San Miguel (i.e., the ability to have different zones of comfort or feel in a surface of a foam element while a using a single density foam) while, on the other hand, obviating or mitigating the occurrence of "read through” in the A-surface of the foam element when it is adapted for vehicular seats.
  • the present invention provides a padded element comprising a foam substrate having disposed therein a first internal surface and a second internal surface opposed to the first internal surface, the first internal surface being interposed between an outer surface of the foam substrate and the second internal surface, at least one of the first internal surface and the second internal surface comprising a textured portion.
  • the present invention provides a mold for production of a molded element, the mold comprising a first mold portion and a second mold portion engageable to define a mold cavity, the mold further comprising at least one insert element having a textured surface and configured to create a first internal surface and a second internal surface opposed to one another in molded element.
  • the padded element is comprised in a seat element.
  • the seat element preferably comprises a molded foam seat element, more preferably a molded foam element comprising a unitary foam portion.
  • An advantage of using such a molded foam element in the present seat element is the presence of a skin on the surface of one or both of the first internal surface and the second internal surface. The presence of the skin is characterized by the internal surface (first and/or second) having a greater density at the surface (e.g., 1 mm depth) as compared to the central or core region remote from the internal surafce. Density can be determined using ASTM D-3574.
  • an internal interface is created between a pair of internal surfaces disposed within with the body of the foam substrate, wherein at least one of the internal surfaces is textured.
  • the pair of internal surfaces disposed within the body of the foam substrate combine to form one or more cavities in the foam substrate (e.g., by the provision of one interal surface have a textured portion and the other internal surface being untextured).
  • a textured surface creates a contacting interface (either at rest or when an occupant sits on the seat) between below or remote from the A-surface of the foam element.
  • This interface has different properties than the exposed surface of the seating element.
  • foam seating element which is a separate piece from the foam substrate.
  • foam seating portion created with the foam substrate in a single mold resulting in the production of a so-called fold-over construction which allows the use of a single tool to produce the entire foam element (compared to the first embodiment which requires separate tools to produce the foam seating element and the foam substrate). Both of these embodiments allow for the use of a substantially complementary pair of internal surfaces in the foam seating element and foam substrate.
  • a particularly preferred alternate embodiment relates to the use of a mold having one or more tongue (or insert) elements which produce the above-mentioned interface in situ in a single piece of foam.
  • tongue-element can be retrofitted to existing molds thereby allowing implementation of the present invention without the need to construct custom molds and incur the associated capital costs.
  • the foam element containing the first internal surface and the second internal surface described above may be the same or different, regardless of whether the foam element is a unity piece of foam or the first internal surface and the second internal surface are comprised in separate pieces of foam. If the foam element containing the first internal surface and the second internal surface described above is different, it may be achieved by pouring different formulations for the foam. Preferably, the result is in foam elements for the first internal surface and the second internal foam surface that differ in respect of one or more of the following: density, hardness, indentation force deflection, sound absorption, sound transmission loss, hysteresis, tensile strength and combinations of two or more of these.
  • Figure 1 illustrates a perspective view of a first embodiment of the seat element of the present invention
  • Figure 2 illustrates a sectional view of the seat element illustrated in Figure 1 ;
  • Figure 3 illustrates an enlarged portion of the seat element illustrated in Figure
  • Figure 4 illustrates a second embodiment of the seat element of the present invention
  • Figure 5 illustrates a sectional view of the seat element illustrated in Figure 4.
  • Figure 6 illustrates production of the final seat element illustrated in Figure 4.
  • Figure 7 illustrates a perspective view of a mold suitable for use in producing a third embodiment of the seat element of the present invention
  • FIGs 8-12 illustrate in sequential manner production of the third embodiment of the seat element of the present invention using the mold illustrated in Figure 7;
  • Figures 13-14 illustrate a modification of the mold and seat element illustrated in Figures 7-12.
  • Figure 15 illustrates a sectional view of a seat element according to the third embodiment of the present invention.
  • the present invention relates to a padded element comprising a foam substrate having disposed therein a first internal surface and a second internal surface opposed to the first internal surface, the first internal surface being interposed between an outer surface of the foam substrate and the second internal surface, at least one of the first internal surface and the second internal surface comprising a textured portion.
  • Preferred embodiments of the padded element may include any one or a combination of any two or more of any of the following features:
  • the first internal surface comprises a textured portion and the second internal surface is substantially untextured
  • the first internal surface is substantially untextured and the second internal surface comprises a textured portion
  • both of the first internal surface and the second internal surface comprise a textured portion
  • the foam substrate is molded from a unitary foam portion
  • the textured portion comprises a plurality of peak portions and a plurality of valley portions
  • each peak portion comprises an apex portion
  • the apex portion comprises a first pointed portion
  • the apex portion comprises a first rounded portion
  • the apex portion comprises a first flat portion
  • each valley portion comprises a nadir portion; • the nadir portion comprises a second pointed portion;
  • the nadir portion comprises a second rounded portion
  • the nadir portion comprises a second flat portion
  • each peak portion comprises an apex portion and each valley portion comprises a nadir portion
  • the apex portion comprises a first pointed portion
  • the apex portion comprises a first rounded portion
  • the apex portion comprises a first flat portion
  • the nadir portion comprises a second pointed portion
  • the nadir portion comprises a second rounded portion
  • the nadir portion comprises a second flat portion
  • each peak portion in the plurality of peak portions is substantially elongate
  • each valley portion in the plurality of valley portions is substantially elongate
  • the plurality of peak portions comprises a first series of elongate peak portions and a second series of elongate peak portions, the first series and the second series being disposed transverse to one another;
  • the plurality of peak portions comprises a first series of elongate peak portions and a second series of elongate peak portions, the first series and the second series being disposed non-parallel to one another;
  • the plurality of peak portions comprises a first series of elongate peak portions and a second series of elongate peak portions, the first series and the second series being disposed orthogonal to one another;
  • the plurality of valley portions comprises a first series of elongate valley portions and a second series of elongate valley portions, the first series and the second series being disposed transverse to one another;
  • the plurality of valley portions comprises a first series of elongate valley portions and a second series of elongate valley portions, the first series and the second series being disposed non-parallel to one another;
  • a cross-section of adjacent projections comprises a scallop shape
  • a cross-section of valley portions between adjacent projections comprises a scallop shape
  • each projection comprises a cloister vault shape
  • the plurality of projections comprise substantially the same shape and the same dimension
  • the plurality of projections comprise different shapes and different dimensions
  • the plurality of projections comprise substantially the same shape and different dimensions
  • the textured portion comprises a first crenellated pattern; the textured portion comprises a first crenellated pattern and a second crenellated pattern disposed in a transverse relationship with respect to one another; the textured portion comprises a first crenellated pattern and a second crenellated pattern disposed in an orthogonal relationship with respect to one another; the textured comprises a first dentellated pattern; the textured portion comprises a first dentellated pattern and a second dentellated pattern disposed in a transverse relationship with respect to one another; the textured portion comprises a first dentellated pattern and a second dentellated pattern disposed in an orthogonal relationship with respect to one another; the seating surface element comprises a plurality of sections, each section comprising a plurality of peak
  • the padded element further comprises at least one groove that separates at least a portion of a pair of adjacent sections of the plurality of sections;
  • the foam substrate comprises an isocyanate-based foam
  • the foam substrate comprises a polyurethane foam
  • the foam substrate comprises a polyolefin-based foam
  • the foam substrate comprises a polypropylene foam
  • the foam substrate comprises a polyethylene foam
  • the foam substrate comprises a uniform density
  • the foam substrate comprises a variable density.
  • the padded element is in the form of a seat element.
  • the seat element comprises a seating surface portion having comprised therein the outer surface and the first internal surface.
  • the present invention relates to a vehicular seat comprising the above-mentioned seat element.
  • This includes a vehicular seat bottom, a vehicular seat or a complete vehicular seat comprising both of these.
  • the present invention relates to a mold for production of a molded element, the mold comprising a first mold portion and a second mold portion engageable to define a mold cavity, the mold further comprising at least one insert element having a textured surface and configured to create a first internal surface and a second internal surface opposed to one another in molded element.
  • Preferred embodiments of the mold may include any one or a combination of any two or more of any of the following features:
  • the textured surface comprises a plurality of peak portions and a plurality of valley portions
  • each peak comprises an apex portion
  • the apex portion comprises a first pointed portion
  • the apex portion comprises a first rounded portion
  • the apex portion comprises a first flat portion
  • each valley comprises a nadir portion
  • the nadir portion comprises a second pointed portion
  • the nadir portion comprises a second rounded portion
  • the nadir portion comprises a second flat portion
  • each peak comprises an apex portion and each valley comprises a nadir portion
  • the apex portion comprises a first pointed portion; the apex portion comprises a first rounded portion; the apex portion comprises a first flat portion; the nadir portion comprises a second pointed portion; the nadir portion comprises a second rounded portion; the nadir portion comprises a second flat portion; each peak portion in the plurality of peak portions is substantially elongate; the plurality of peak portions are disposed substantially parallel to one another; each valley portion in the plurality of valley portions is substantially elongate; the plurality of peak portions comprises a first series of elongate peak portions and a second series of elongate peak portions, the first series and the second series being disposed transverse to one another; the plurality of peak portions comprises a first series of elongate peak portions and a second series of elongate peak portions, the first series and the second series being disposed non-parallel to one another; the plurality of peak portions comprises a first series of elongate peak portions and a second series of elongate
  • the plurality of projections comprise different shapes and different dimensions
  • the plurality of projections comprise substantially the same shape and different dimensions
  • the seating surface molding element comprises a first crenellated pattern
  • the seating surface molding element comprises a first crenellated pattern and a second crenellated pattern disposed in a transverse relationship with respect to one another;
  • the seating surface molding element comprises a first crenellated pattern and a second crenellated pattern disposed in an orthogonal relationship with respect to one another
  • the seating surface molding element comprises a first dentellated pattern
  • the seating surface molding element comprises a first dentellated pattern and a second dentellated pattern disposed in a transverse relationship with respect to one another
  • the seating surface molding element comprises a first dentellated pattern and a second dentellated pattern disposed in an orthogonal relationship with respect to one another
  • the seating surface element comprises a plurality of sections, each section comprising a plurality of peak portions and a plurality of valley portions; the plurality of peak portions in each section are the same; the plurality of valley portions in each section are the same; the plurality of peak portions and the plurality of valley portions in each section are the same; the plurality of peak portions in each section are different; the plurality of valley portions in each section are different; the plurality of peak portions and the plurality of valley portions in each section are different; the at least one insert element is af
  • the first mold portion is a lid and and the second mold portion is a bowl;
  • the at least one insert element is moveable with respect to the bowl to facilate demolding of the molded element
  • the at least one insert element is pivotally moveable with respect to the bowl to facilate demolding of the molded element
  • the mold comprises a plurality of insert elements, each insert element comprising a textured surface.
  • the present invention relates to process for production of a molded element in the above-described, the process comprising the steps of:
  • the present invention relates to process for production of a foamed element in the above-described, the process comprising the steps of:
  • the foamable composition is a liquid. More preferably, the foamable composition comprises a foamable polyurethane composition.
  • the foamed element is a seat element, more preferably, a vehicular seat bottom, a vehicular seat back or a vehicular seat comprising the combination of these.
  • a seat element is comprised in a vehicular or passenger seat.
  • the term "seat” is intended to have its conventional meaning and includes one or both of a bottom or cushion (i.e., the portion of the seat on which the occupant sits) and a back or backrest (i.e., the portion of the seat which supports the back of the occupant).
  • a "seat” includes both a cushion (or bottom) and a back (or backrest).
  • the term "seat” includes a seat element such as a cushion (or bottom), a back (or backrest) or a unit construction comprising a cushion (or bottom) and a back (or backrest). It should also be mentioned that a seat element may be considered to be a cushion (or bottom), a back (or backrest), a headrest and/or an armrest.
  • a vehicular seat element in particular a seat cushion (or bottom)
  • the present seat element can be used in non-vehicular applications such as domestic and office furniture, stadium seating, theatre seating and the like.
  • Seat element 100 comprises a foam substrate 105.
  • Foam element 105 may be made from conventional foam materials such a polyurethane foam and the like.
  • Foam substrate 105 comprises a recess 110 disposed in a central region thereof. The bottom surface of this recess has a textured portion 115. In the illustrated embodiment, textured portion 115 has a series of elongate grooves defined by a number of flat peaks and flat valleys. [0037] Foam substrate 100 may be produced in a conventional manner - see for example, San Miguel described above.
  • foam substrate 105 is a molded foam, more preferably made from polyurethane.
  • textured portion 115 would have the skinned surface described above.
  • a seating surface portion 120 disposed above foam substrate 105 is a seating surface portion 120.
  • Seating surface portion 120 may be produced independently of foam substrate 105 and can be made from conventional foam materials such as polyurethane foam and the like.
  • seating surface portion 120 It is possible to produce seating surface portion 120 out of the same or different foam than foam substrate 105. Further, it is possible that seating surface portion 120 and foam substrate 105 can have the same or different densities.
  • the undersigned of seating surface portion 120 comprises a textured surface 125. In this preferred embodiment, textured portion 125 would have the skinned surface described above.
  • textured surface 115 and textured surface 125 are substantially complementary.
  • seating surface portion 120 is lowered in the direction of Arrow A such that a "fit” is created between textured surface 115 and textured surface 125 - see Figure 2.
  • an interface 130 is created between textured surfaces 115,125. This interface is below the A-surface of seat element 100 while, in the illustrated embodiment, the actual A-surface is relatively non-textured.
  • the provision of interface 130 below the A-surface of seat element 100 provides a firmer feel in central portion 110 of seat element as compared to the outer portions of seat element 100.
  • seat element 200 With reference to Figures 4-6, there is illustrated seat element 200.
  • seat element 100 illustrated in Figure 1-3 The major difference between seat element 100 illustrated in Figure 1-3 and seat element illustrated in Figure 4-6 is that seating surface portion 220 in seat element 200 is attached to foam substrate 205 by a connection portion 250.
  • seat element 200 it will be apparent to those of skill in the art that an advantage of seat element 200 is that it may be produced in a single mold thereby avoiding the increase to costs associated with producing seat element 100.
  • textured surfaces 215,225 may be selected using the same approach described above with reference to seat element 100.
  • seating surface portion 220 is folded in the direction of Arrows B -see Figures 4 and 6. Once seating surface portion 220 is completely folded over and fits into recess portion 210 of foam substrate 205 in a manner whereby textured surfaces 215,225 corporate to form an interface as described above with reference to seat element 100.
  • the interface between textured surface 115,215 of foam substrate 105,205 and textured surface 125,225 of seating surface portion 120,220 is substantially complementary. While this is preferred, it is possible to select shapes which strictly speaking, are non complementary but create a so-called interference or friction fit. The point is that the shapes of textured surfaces 115,215 of foam substrate 105,205 and 125,225 of seating surface portion 120,220 should be selected so as to secure the pieces together until a trim cover can be applied to seat element 100,200.
  • Seat element 300 comprises an A-surface 305 and a B-surface 310 opposed to A-surface 305. As can be seen, A-surface is relatively untextured.
  • Seat element 300 comprises a foam substrate 315.
  • foam substrate 315 comprises a cavity 320 comprised of a textured internal surface 325 in spaced relation with respect to an untextured internal surface 330.
  • Textured internal surface 325 consists of a series of peaks 327 and valleys 329.
  • the convention used is a "peak” is directed into cavity 320 whereas a “valley” is directed away from cavity 320.
  • peaks 327 of textured internal surface 325 do not contact untextured internal surface 330. It should be understood by those of skill in the art that it is possible to modify seat element 300 such that peaks 327 of textured internal surface 325 are in contact with untextured internal surface 330 even if no occupant is sitting on seat element 300.
  • Seat element 300 is a particularly preferred embodiment of the present padded element.
  • the provision of textured internal surface 325 in cavity 320 of foam substrate 315 provides improved comfort of seat element 300 while obviating or mitigate the occurrence of "read through” described above (e.g., compared to placement of the textured surface directly on A-surface 305).
  • the precise texture pattern can be modified and different zones of different textures can be used to confer a different comfort and feel to A-surface 305 when an occupant sits on seat element 300 - see, for example San Miguel described above for a descript of various examples of textured surfaces that may be used.
  • seat element 300 is made from a unitary foam substrate 315— this is a preferred embodiment of the present padded element.
  • this illustrated embodiment by coupling distinct foam elements or by using the so-called flap-over approach as described above with reference to Figures 1-3 and 4-6, respectively.
  • mold 400 for production of seat element 300.
  • mold 400 comprises a lid 405 and a bowl 410.
  • lid 405 and bowl 410 are coupled in a pivoting arrangement via a hinge 407 (or other suitable means) between an open position ( Figure 9) and a closed position ( Figure 10).
  • a hinge 407 or other suitable means
  • Figure 10 In the closed of mold 400, there is a defined a mold cavity 420.
  • an insert element 415 is mounted to bowl 410 via a pivot element 417.
  • Insert element 415 comprises a textured surface 420 and a planer surface 430.
  • Textured surface 420 comprises a series of elongate ridge elements 422. Adjacent pairs of elongate ridge elements 422 are separated valley portions 424.
  • Figures 11-13 illustrate in sequential manner, production of the padded element such as seat element 300 illustrated in Figure 7.
  • a foamable composition is dispensed from a suitable nozzle 402 ( Figure 8) into bowl 410. Lid 405 and bowl 410 are closed and the foamable composition is expanded to fill mold cavity 409 as shown in Figure 11 to produce a foamed part 440.
  • lid 405 is swung open.
  • insert element 415 is also pivoted in a upward direction toward lid 405 as shown in Figure 12.
  • Foam part 440 is then removed from mold 400 in the direction of arrow A.
  • Peak portions 427 are shown within foam part 440 and represent foam that fills valley portions 424 between elongate ridge elements 422 of insert element 415.
  • mold 500 which is a modification of mold 400 described above with reference to Figures 8-13.
  • reference numerals with the same last two digits as those appearing in Figures 8- 13 are intended to denote like parts.
  • mold 500 comprises a lid 505 and bowl 510. Lid 505 and bowl 510 are in a pivoting arrangement via a hinge 507.
  • a modification in mold 500 compared to mold 400 is the provision of two insert elements 515a,515b in mold 500 (cf. single insert element 415 in mold 400).
  • the insert elements may have the same textured surface 520a,520b or the textured surfaces may be different.
  • foam part 540 is large, it may be advisable to use multiple insert elements 515a, 515b.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Transportation (AREA)
  • Manufacturing & Machinery (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Mattresses And Other Support Structures For Chairs And Beds (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Seats For Vehicles (AREA)
  • Molding Of Porous Articles (AREA)

Abstract

L'invention porte sur un élément rembourré, lequel élément comprend un substrat en mousse à l'intérieur duquel sont disposées une première surface interne et une seconde surface interne opposée à la première surface interne, la première surface interne étant interposée entre une surface externe du substrat en mousse et la seconde surface interne, la première surface interne et/ou la seconde surface interne comprenant une partie texturée. Dans un mode de réalisation largement préféré, la paire de surfaces internes disposées à l'intérieur du corps du substrat en mousse se combinent de façon à former une ou plusieurs cavités dans le substrat en mousse (par exemple, par la disposition d'une surface interne comportant une partie texturée et de l'autre surface interne qui est non texturée). La disposition d'une telle surface texturée crée une interface de contact (soit au repos soit quand un occupant est assis sur le siège) entre le dessous ou une certaine distance à partir de la surface A de l'élément en mousse. Cette interface comporte des propriétés différentes de celles de la surface exposée de l'élément de siège. Par l'adoption de cette approche à interface interne pour une ou plusieurs zones de l'élément en mousse, il est possible de conférer des qualités différentes de confort et de sensation à la surface externe de l'élément en mousse (par exemple, la surface A d'un élément de siège de véhicule), même si l'aspect de cette surface externe peut être relativement non texturé. De cette manière, l'apparition d'une « lecture au travers » décrite ci-dessus est éliminée ou amoindrie. L'invention porte également sur un procédé et sur un moule pour produire l'élément rembourré.
EP12811813.0A 2011-07-14 2012-07-16 Élément de siège en mousse et procédé et moule pour sa production Active EP2731907B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SI201231533T SI2731907T1 (sl) 2011-07-14 2012-07-16 Sedežni element iz pene, postopek in kalup za proizvodnjo le-tega
EP18204508.8A EP3473591A1 (fr) 2011-07-14 2012-07-16 Élément de siège en mousse et procédé et moule de fabrication de celui-ci
PL12811813T PL2731907T3 (pl) 2011-07-14 2012-07-16 Element piankowy siedzenia oraz sposób i forma do jego wytwarzania

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201161457943P 2011-07-14 2011-07-14
PCT/CA2012/000668 WO2013006959A1 (fr) 2011-07-14 2012-07-16 Élément de siège en mousse et procédé et moule pour sa production

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP18204508.8A Division EP3473591A1 (fr) 2011-07-14 2012-07-16 Élément de siège en mousse et procédé et moule de fabrication de celui-ci

Publications (3)

Publication Number Publication Date
EP2731907A1 true EP2731907A1 (fr) 2014-05-21
EP2731907A4 EP2731907A4 (fr) 2015-03-11
EP2731907B1 EP2731907B1 (fr) 2018-11-21

Family

ID=47505458

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12811813.0A Active EP2731907B1 (fr) 2011-07-14 2012-07-16 Élément de siège en mousse et procédé et moule pour sa production
EP18204508.8A Withdrawn EP3473591A1 (fr) 2011-07-14 2012-07-16 Élément de siège en mousse et procédé et moule de fabrication de celui-ci

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP18204508.8A Withdrawn EP3473591A1 (fr) 2011-07-14 2012-07-16 Élément de siège en mousse et procédé et moule de fabrication de celui-ci

Country Status (13)

Country Link
US (2) US20150028650A1 (fr)
EP (2) EP2731907B1 (fr)
JP (2) JP6621986B2 (fr)
KR (3) KR102373740B1 (fr)
CN (1) CN103842284B (fr)
BR (1) BR112014000464B1 (fr)
CA (1) CA2841871A1 (fr)
ES (1) ES2711645T3 (fr)
MX (1) MX2014000583A (fr)
PL (1) PL2731907T3 (fr)
RU (1) RU2014102480A (fr)
SI (1) SI2731907T1 (fr)
WO (1) WO2013006959A1 (fr)

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Also Published As

Publication number Publication date
SI2731907T1 (sl) 2019-06-28
US20240174150A1 (en) 2024-05-30
RU2014102480A (ru) 2015-08-20
KR20240025064A (ko) 2024-02-26
CA2841871A1 (fr) 2013-01-17
EP2731907A4 (fr) 2015-03-11
JP6621986B2 (ja) 2019-12-18
CN103842284A (zh) 2014-06-04
JP6672238B2 (ja) 2020-03-25
JP2018075366A (ja) 2018-05-17
BR112014000464A2 (pt) 2017-02-21
JP2014527842A (ja) 2014-10-23
BR112014000464B1 (pt) 2021-02-02
CN103842284B (zh) 2016-10-12
ES2711645T3 (es) 2019-05-06
PL2731907T3 (pl) 2019-06-28
KR20210082537A (ko) 2021-07-05
WO2013006959A1 (fr) 2013-01-17
MX2014000583A (es) 2014-10-24
KR20140044882A (ko) 2014-04-15
EP3473591A1 (fr) 2019-04-24
US20150028650A1 (en) 2015-01-29
KR102373740B1 (ko) 2022-03-15
EP2731907B1 (fr) 2018-11-21

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